The invention discloses a
dyeing technology for carrying out one-bath scouring and
dyeing on a lycra-containing cotton knitted fabric by active
turquoise blue, mainly aims at solving the problems that a traditional technology is relatively large in
water consumption and
coal consumption, long in technology duration and high in
power consumption. The
dyeing technology comprises the working procedures of preshaping, stitching the edge, carrying out one-bath scouring and dyeing, and carrying out aftertreatment and afterfinish in sequence, wherein in the working procedure of the preshaping, a chelating agent, a deoiling agent, tea
saponin, a tea
saponin dispersion dispersion liquid and a
scouring agent are fed; in the working procedure of the one-bath scouring and dyeing, the deoiling agent, a defoaming agent and refined
enzyme are fed into a dye vat after being diluted by clear water, a leveling agent,
anhydrous sodium sulphate and
sodium carbonate are fed into the dye vat in a way of circulating material injection, the active
turquoise blue and
urea are fed in a way of dissolving the materials by the clear water, and the heat preservation is carried out at the temperature of 80 DEG C. After the dyeing technology is adopted, the lycra-containing cotton knitted fabric can be bleached, dyed and scoured by the working procedure of the one-bath scouring and dyeing, so that a plurality of tasks can be completed in one working procedure, the technological process is shortened, the
processing steps are reduced, and the
water consumption, the
electricity consumption and the
coal consumption in the
processing steps can be omitted.